Rubus rosa

a perennial woody deciduous member of the Rubus genus in the family Rosaceae.

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Taxonomy and growth

Family
Rosaceae
Genus
Rubus
Life cycle
perennial
Foliage
deciduous
Woodiness
woody
Fertility
Insects, Apomixy
Flower type
hermaphrodite
Pollinators
Insects, Apomixy

Uses

Edible uses

This section contains historical Plants For A Future notes marked noncommercial.

Fruit - raw or cooked[2][5]. The fruit is about 20mm long[6].

Plant part
Fruit

Material uses

This section contains historical Plants For A Future notes marked noncommercial.

A purple to dull blue dye is obtained from the fruit[4].

Product or use
Dye

Environment

Range
North-western and Eastern N. America - southwards from Quebec.
Habitat
Dry pastures, old fields and clearings[7].
Light
full sun
Shade tolerance
light shade
Water
moderate
Soil textures
sandy, loamy, clay
Soil pH
acid, neutral, alkaline
Drainage
well drained
Tolerates Nutritionally Poor Soil
No
Drought
intolerant

Propagation

This section contains historical Plants For A Future notes marked noncommercial.

Seed - requires stratification and is best sown in early autumn in a cold frame. Stored seed requires one month stratification at about 3°c and is best sown as early as possible in the year. Prick out the seedlings when they are large enough to handle and grow on in a cold frame. Plant them out into their permanent positions in late spring of the following year. Cuttings of half-ripe wood, July/August in a frame[6]. Tip layering in July. Plant out in autumn. Division in early spring or just before leaf-fall in the autumn[6].

Cultivation

This section contains historical Plants For A Future notes marked noncommercial.

Easily grown in a good well-drained loamy soil in sun or semi-shade[1][3][6]. Some authorities consider this species to be no more than a synonym of R. alumnus[7]. This species is a blackberry with biennial stems, it produces a number of new stems each year from the perennial rootstock, these stems fruit in their second year and then die[6]. The plant produces apomictic flowers, these produce fruit and viable seed without fertilization, each seedling is a genetic copy of the parent[6]. Plants in this genus are notably susceptible to honey fungus[6].

References

  1. F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951-00-00

  2. Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing 1976-00-00

  3. Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981-00-00

  4. Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. 1974-00-00 ISBN 0-02-544950-8

  5. Kunkel. G. Plants for Human Consumption. Koeltz Scientific Books 1984-00-00 ISBN 3874292169

  6. Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992-00-00 ISBN 0-333-47494-5

  7. Fernald. M. L. Gray's Manual of Botany. American Book Co. 1950-00-00

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